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''OnePiece'' is a 2005 ActionGame for the GameBoyAdvance developed by Creator/{{Dimps}} and released ''exclusively in America'', unlike many others which were or still are [[NoExportForYou exclusive to Japan]]. It plays similarly to ''VideoGame/DragonBallAdvanceAdventure'' (but with a greater focus on platforming) and has six chapters, covering Luffy's adventures in East Blue from when he recruits Zoro to when he escapes from the marines in Logue Town.

Playing the games shows that the developers were indeed fans of the manga and [[ShownTheirWork got many details down to spec]] (especially in a few of the boss battles). Though as the series was under [[FourKidsEntertainment 4Kids]] license at the time it does have some of the naming conventions (Cursed Fruit, Chaser, Gum Gum Blast, etc).
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!!This game contains the following tropes:
* [[OneUp 1-up]]: They're shaped like Luffy's head.
* AdvancingBossOfDoom: Arlong just before the final phase of his fight.
* AdvancingWallOfDoom: Smoker at the end of the game. Not really a AdvancingBossOfDoom because Luffy can't fight back. When Luffy reaches his ship, [[InstantWinCondition Smoker just disappears.]]
* AndTheAdventureContinues: Luffy's crew escapes from Logue Town and head for the Grand Line.
* AssistCharacter: Zoro, Nami, Usopp and Sanji.
* {{Backtracking}}: To collect some items, you often have to search around already cleared levels. And sometimes you have to backtrack during the levels - bringing Usopp to the Usopp Pirates, for example.
* AutoScrollingLevel: Logue Town 2.
* BagOfSpilling, LetsSplitUpGang: Luffy's crew runs ahead of him in the beggining of every level just so he has to search for them again and again. This does not happen in the main bosses' levels.
* BalloonBelly: Luffy's Gomu Gomu no Balloon technique, which is used to deflect bullets.
* BattleThemeMusic: One for bosses of Areas 2, one for main bosses and one for [[FinalBoss Smoker]].
* BicepPolishingGesture: Luffy's VictoryPose.
* BonusBoss: Alvida ([[{{Gonk}} both]] [[MsFanservice forms]]) and Buggy (in his kart form).
* BonusLevel: After every boss except the last one, there's a bonus level where Luffy must defeat a bunch of enemies before the [[TimedMission timer ends]] to get a couple of 1-ups. This is unlocked as a EndlessGame after the game is beaten once.
* BossArenaUrgency: The floor being torn apart is something to be concerned about when fighting Gin.
* BossRush: Get all the Golden Coins to unlock it.
* BottomlessPits
* {{Bowdlerise}}: Sanji is given lollipops and Smoker is renamed Chaser. [[GettingCrapPastTheRadar Smoker still smokes in his artwork, though.]]
* ClippedWingAngel: Think Arlong looks intimidating with his huge sword? [[OutsideTheBoxTactic Just try walking under him.]]
* CollectionSideQuest: Items, Golden Coins and small Treasure Chests.
* CompressedAdaptation: There's very little dialogue and cutscenes in this game to properly explain the story. You can talk to a few characters, but that's it.
* TheComputerIsACheatingBastard: Bosses can randomly ignore the knockback or the stunning effect from Luffy's machine gun punches.
* CounterAttack: Part of Tashigi's moveset. [[ThatOneAttack It is extremely danguerous.]]
* CrateExpectations: They contain powerups or golden coins.
* DuelBoss: [[ThatOneBoss Tashigi]], because you can't get support characters in Logue Town 2. [[FinalBoss Smoker]] can be this by extension, but you can replay any of the earlier levels to get everyone back to fight him.
* EmergencyEnergyTank: [[GameBreaker At the small cost of two power bars]], Sanji can help Luffy fully recover his HP.
* FinalBoss: Smoker.
* GameOverMan: A tired Luffy.
* GuideDangIt: Finding all the coins and small treasure chests requires careful exploration of every corner and optional paths.
* InexplicableTreasureChests: Most of them contain Golden Coins. And you can't open them at first. You must replay Port Town 2 and get the key from Chouchou the dog.
* InterfaceScrew: With his hypnosis, Jango can either reverse Luffy's controls or mess up with his sight.
* InvincibilityPowerUp: There's a fist item that makes Luffy able to OneHitKO enemies with CollisionDamage for a while.
* LedgeBats: Port Town 1 ends with a few cannons placed by the side of BottomlessPits. Most enemies fill this role at various times, too.
* LimitBreak: Luffy and each of his friends have two.
* MarathonLevel: All the levels are very long.
* {{Metroidvania}}: It's nothing complex, but some paths and items can only be accessed after you unlock Luffy's Spear attack and get some support characters.
* NeverSayDie: Averted; cutscene dialogue frequently uses the words "die" and "kill", which is interesting, considering this game is based on the 4Kids dub.
* PlatformBattle: Gin's boss arena, which he [[BottomlessPits starts breaking]] [[TurnsRed when low on health.]]
* RapidFireFisticuffs: Luffy's Gomu Gomu no Machine Gun.
* RecurringRiff: The music for Navy Base 1, Logue Town 1 and Credits.
* ScoringPoints: The points you get from defeating enemies appear as ExperiencePoints on Luffy's WantedPoster.
* SequentialBoss: Some bosses change their attacks so much when they get low on health that they qualify for this trope. Especially Arlong.
* {{Shoryuken}}: Smoker can do this.
* SingleStrokeBattle: Ensues when Zoro fights Mihawk in Baratie 2.
* SoundTest: Bring all the mini chests to Gaimon to unlock it.
* SpikesOfDoom
* StationaryBoss: Don Krieg, at first.
* StandardStatusEffects: Usopp can stun enemies and Jango can put Luffy to sleep. Sometimes his hypnosis causes himself to sleep too, but he always wakes up first.
* SuperMovePortraitAttack: Luffy gets one for his Bazooka and one for his Axe, but his friends just get one.
* ThisLooksLikeAJobForAquaMan: Zoro's second LimitBreak is allowed to damage mini bosses once per frame while they're unable to escape, so you can avoid reentering the room over and over to defeat them. Nami can steal bombs from enemies when there are none around to break certain walls.
* TurnsRed: Most bosses get at least one new move when they're low on health, [[ThatOneAttack or start spamming their most annoying attack.]]
* UseYourHead: Luffy's Gomu Gomu no Bell.
* WakeUpCallBoss: Axe-Hand Morgan has a simple moveset, but is able to block attacks and punish you if you attack carelessly. He can call {{mooks}} to help him, too.
* VictoryPose: Luffy [[BicepPolishingGesture does one]] whenever he beats a level or boss. Smoker does one too, if he captures Luffy during the last level.
* VideoGameStealing: Nami can steal items from enemies.
* YouShallNotPass: Said by Tashigi in Logue Town 2. And before that, by the Usopp Pirates in Syrup Village.
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